摘要
利用最大功率跟踪(MPPT)可有效提高光伏发电效率.常见MPPT控制方案有恒定电压法和扰动观察法,前者无法及时自适应跟踪输出电压,后者只能确保光伏电池始终在最大功率点附近摆动.相比上述方法,提出的电导增量法在跟踪初期不存在功率波动,在光照或温度变化时,可快速响应,稳定性好.根据光伏电池工程数学模型,对光伏电池输出特性进行分析.采用电导增量法,对光伏电池进行最大功率跟踪控制,仿真结果验证了理论分析的正确性.
Maximum power point tracking(MPPT)can effectively improve the efficiency of photovoltaic generation.Common MPPT control schemes include constant voltage tracking method and perturbation and observation method.The former cannot adaptively track the output voltage in time,and the latter can only ensure that the photovoltaic cell swings around the maximum power point.Compared with the above methods,the proposed incremental conductance method has no power fluctuation at the initial stage of tracking.When light or temperature changes,it can quickly make respond and achieve stability.According to the engineering mathematical model of photovoltaic cell,the output characteristics of photovoltaic cell are analyzed.The maximum power point tracking control of photovoltaic cells is carried out by the incremental conductance method,and the simulation results verify the correctness of the theoretical analysis.
作者
孟德越
任雪维
MENG De-yue;REN Xue-wei(Department of Mechanical and Electrical Engineering,Cangzhou Normal University,Cangzhou,Hebei 061001,China;State Grid Hebei Electric Power Company Baoding Power Supply Company,Baoding,Hebei 071000,China)
出处
《沧州师范学院学报》
2022年第1期107-111,132,共6页
Journal of Cangzhou Normal University
关键词
MPPT
光伏发电
电导增量法
MPPT
photovoltaic generation
incremental conductance method
